Automobile rear bumper



FIG. 1 is a top, front, and right perspective view of an automobile rear bumper, showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a left side elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken lines in the drawings illustrate portions of the automobile rear bumper form no part of the claimed design. 

CLAIM The ornamental design for an automobile rear bumper, as shown and described. 